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Water Pressure Systems 2.9 / 3.5 / 5.0 mounted
to DC motor 12/24 V.
Typical applications
The WPS 3.5 & 5.2 Uno and WPS 2.9 & 3.5
Uno Max are fi ve-chamber positive displace-
are five-chamber positive displace-
ment diaphragm pumps. These pumps are
the ideal choice for pressurizing water in a
closed system such as that found in a boat or
in a recreational vehicle.
They can easily build the pressure required
for a pressurized water supply system.
Features
• Quiet operation.
• Smooth flowing.
• Self-priming.
• Integrated pressure switches turns pumps
on and off automatically when tap is
opened or closed.
• Dry running without damage.
• Low power consumption.
• Quick disconnect fittings.
Working principle
As the pump runs, pressure builds until 2.8
bar/ 41 psi. At this point, the integrated pres-
sure automatically shut the pump off.
The pump is equipped with positively check-
ing outlet valves, which ensure
that the pressure is maintained after the
pump shut off.
When water is demanded (at the faucet,
shower etc.) the pressure decreases.
After a moderate drop in pressure, the inte-
grated pressure switch automatically turns
the pump back on.
Due to their durable construction and the
thoughtful design, the WPS 2.9/3.5/5.2
pumps will provide many years of service.
IMPORTANT! The pressure switch setting of
this pump is made at the factory.
Warranty invalidated by pressure switch in-
terference.
8
Technical description
Body:
Polypropylene
Valve housing:
Polypropylene
Valves:
Santoprene
Diaphragm:
Santoprene
Connection:
1/2" hose (ø 18 mm).
Max liquid temp: Max +50°C/+120°F
Fasteners:
Stainless steel
Max. suction lift: WPS 2.9 –2 m/6.5 ft
WPS 3.5 –2 m/6.5 ft
WPS 5.2 –2.5 m/8.2 ft
Cut in pressure: 1.7 bar/25 psi
Cut off pressure: 2.8 bar/41 psi
Duty cycle:
Intermittent max 20 min.
Motor:
WPS 2.9 - 90 W
WPS 3.5 - 100 W
WPS 5.2 – 150 W
12/24 VDC with built in
thermal protection.
Accumulator
tank:
Corrosion protected tank
with internal rubber bladder.
Capacity 2 liters. Precharge
pressure, 0.8 bar. Air valve,
standard tire valve.
The motor is ignition protected according
to ISO 8846 (Small craft –Electrical devices
- Protection against ignition of surrounding flam-
mable gases).
Type designation
Type
WPS 3.5 UNO 12V
WPS 3.5 UNO 24V
WPS 5.2 UNO 12V
WPS 5.2 UNO 24V
WPS 2.9 UNO MAx 12 V
WPS 2.9 UNO MAx 24 V
WPS 3.5 UNO MAx 12 V
WPS 3.5 UNO MAx 12 V
Part no.
10-13408-01
10-13408-02
10-13408-03
10-13408-04
10-13410-01
10-13410-02
10-13411-01
10-13411-02
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